Tool post



Patented Oct. 16, 1951 UNITED STAT ES btir GEFICE 2,571,559.l Y v Tool.Posr Taeitusw. Gaillard, Baldwin, NT Y. Application August 1i5, 194.7.serial No. 768,848Y

1. claim.

Thisinvention relates. to new and useful improvements inv means foradjusting tools in various positions inftool posts.

An object of the invention isto. provide a simple,.eff`1cient,`durable,- and easily operated device whereby the position of a tool on apost may be readilyv variedover a Wide rangeY of longitudinal andAangular positions.

A furthery object is tolprovide; a construction.

whereby the tool adjustments mayY be made quickly and with a highdegreeof fineness and accuracy and without any special skill on the part ofthe operator.

Further and more specic objects, features, and advantages will moreclearly appear from the detailed specification hereinafter set forthespecially when taken in connection with the accompanying drawings whichillustrate present preferred forms which the" invention may assume andwhich form part of the specification. j

In brief and general terms, the invention is related to a tool post ofthe usual type which generally has a vertical slot therein. Related' tothejslot and the post Vis a seat having a curved recess. in which isseated the curved lower face of anadjustable shoe. On the Atop of theshoe rests atool supporting bar, andon top of that a cam block orelement which` may be slid back and forth slightly on the bar. Manualmeans is provided to move the shoe on its curved seat to vary the-slopeof theupper face of it and thereby to adjust the slope of the toolshaft. After the proper slope is achieved the cam block is moved bymanual means to press down on the bar and jam it in place.

More particularly the shoe is moved either by hand or by means of athreaded shaft connected to one end of the shoe and operated by a handwheel to obtain fine adjustments. The cam block is moved by engagement'with a pivoted arm flxed at one end to the post and resting in a notchin the block at the other end. A threaded shaft is connected to theblock and the shaft is moved by turning a threaded hand wheel or byoscillating a hand lever adapted to engage the wheel to turn it.

The present preferred form which the invention may assume is illustratedin the drawings, of which,

Fig. 1 is an elevation of the tool post construction with certainportions broken away;

Fig. 2 is a plan view of the device;

Fig. 3 is a vertical section taken on the line 3--3 of Fig. 2;

Fig. 4 is a vertical section taken on the line 4-4 of Fig. 2; and,

(onse-3.7)

justing shoe I5 having a curved lower surface resting in the concavityof the'plate I4 and a flat upper surface on which rests a toolsupporting' bar I6.

On the outer endv ofl the bar I6 are disposed Wellknown clampingelements I"I and I8 between end`A 22, resting in a cavity or recess 23on they uppersurface of a cam block or elementl 24;

which: is clamped a tool' I9. In order to clamp the.i bar I5 in positionon the shoe I5 there is provided anV arm 29 pivoted at the top of' theVpostfslot on a pin 2 I- and having its lower curved- W-hich is adaptedto be slid along the surface of the bar I6. An adjusting rod 25 isconnected to the rear of' cam block 2A and is threaded at 2B on itsouter portion andis guided` throughxa bore in a strapZ-'I slidablyembracing the post Ill. This bore isy of suiciently large diametergreaterr than that of the rod, as shown, to permit a certainv ampleamountv of lateral axial movement of.

the rod with-respect to the strap thus preventing binding as the' shoeI5 may be angularly adjusted. A hand wheel 28 interiorly threaded ismounted on this portion of the rod 25 and as it is turned it tends tomove the rod axially in one direction or the other and thus slide thecam block 24 along the top of the bar I5. This movement Will eithertighten or loosen the pressure between the block 2li and the bar so asto hold the shaft firmly in any adjusted position.

The hand wheel 28 has notches 29 around its periphery which are engagedby a pin 39 projecting laterally from a hand lever 3l which is at itslower end slotted at 32 to pass around a sleeve 33 fixed to strap 21. Inthe slot 32 beneath the sleeve 33 is a spring 34 to resist the axialmovement of the lever 3| to lift the pin 30 out of a notch 29. It willbe clear that the lever may be used to turn the hand wheel 28 instead ofthe hand of the operator. It will thus be clear that by turning the handwheel 28 by hand or by the intermediary of the lever 3| the shaft 25 islongitudinally moved to slide the cam block 24 along the top of the toolbar I6 and press it against said bar due to the camming action of thepivoted arm 20. Therefore the tool bar may be easily,

quickly and firmly adjusted in any desired set position as to its lengthadjustment.

Now as to the angular adjustment of the tool bar I6, reference is had toshoe I5 which has a curved bottom resting in a similarly curved cavityor seat on the bottom of the tool post preferably the ring plate I4. Itis clear that as the shoe is moved backward or forward, the slope of itsupper face will be altered and will therefore alter the slope ofanything resting on it which in this case is the tool bar I6. In orderto so move the shoe in the simplest form of the device I provide lug 35on top of a laterally disposed block 36 connected to one end of the shoeas seen in Fig. 5. In this case the adjustment is simple andinexpensive. However, this adjustment is not so iine or accurate asmight be desired under certain circumstances so the form of adjustmentshown in Fig. 3,is available. This consists of an upright pin orlball-headed stud 31 projecting universally into the end of a casing 38on the end of a threaded shaft 39. This shaft threadably engages asleeve 40 which is rotatably mounted in a bore in a block 4I and thesleeve has a hand wheel 42 connected to one end thereof. By turning thewheel 42 the sleeve is turned and moves the shaft 39 axially and thusmoves the casing 38 and with it the shoe so as to adjust the slope ofthe shoe on its curved seat. The block 4I is formed of two plates heldtogether by screws 43 and one of these plates has a stud 44 projectedinto a bore in the side of the post I with an annular groove 45 thereinto receive a short pin 46 which holds the stud in the bore but permitsthe slight rotation of the stud caused by the slight change in the angleof the shaft 39 as the shoe I is adjusted. Thereby the turning of thewheel 42 permits very ne adjustments of the shoe and therefore very neadjustments of the tool bar I6. These various adjustments are easily andquickly achieved to a fine degree and permit wide variations in theposition and angularity of the tool to be made.

In Fig. 4 is shown a simple construction whereby the device or partsthereof may be lubricated. The end of pin 2I extends through the post I0and is hollowed out as at 41. Over the end of the shaft or pin 2l istight-fitted a casing 48 having a chamber 49. An oil filler pipe 5|]extends into the chamber 49 and through the hollow end 41 of the pin 2|and has a lateral passage 5I con- Y limited to such details and formssince many changes and modifications may be made in the invention in itsbroadest aspects. Hence itis desired to cover any and all forms andmodifications of the invention which may come within the language orscope of the appended claim.

I claim:

In a device of the class described. a post, a shoe associated therewithand having a lower curved surface, a seat on which the shoe rests andhaving a similarly curved surface, a stud on one end of the shoe, athreaded member loosely connected at one end to said stud, a, blockconnected to the post and having a rotatable threaded sleeve throughwhich said threaded member extends, and a wheel on the sleeve wherebyturning the wheel will longitudinally move the threaded member to movethe shoe longitudinally of its seat to alter the slope of the shoe.

TACITUS WM. GAILLARD.

REFERENCES CITED The following references are of record in the le ofthis patent:

UNITED STATES PATENTS Number Name Date 880,948 Wilhelm Mar. 3, 19081,032,382 Davenport July 16, 1912 1,475,257 Bottone Nov. 27, 19231,526,849v Grabill Feb. 17, 1925 1,571,363 Barker Feb. 2, 1926 2,154,496Darash Apr. 18, 1939 2,205,879 Fausnaugh June 25, 1940 2,390,022 WoodNov. 27, 1945 2,458,740 Schafer Jan. 11, 1949 FOREIGN PATENTS NumberCountry Date 13,699 Great Britain 1913

